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E. 81; R. OORNELY. OVERSEAMING SEWING MAGHINE.

No. 501,057. Patented July 11, 1893.

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E. & Ry GORNELY. OVERSEAMING SEWING MACHINE.

No. 501,057. Patented July 11, 1893.

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UNITED STATES PATENT OFFICE.

EMILE OORNELY AND ROBERT CORNELY, OF PARIS, FRANCE.

OVERSEAMING SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 501,057, dated July 11,1893. Application filed December 8, 1892. Serial No. 454,506. (Nomodel.)

To all whom it may concern.-

Be it known that we, EMILE CORNELY and ROBERT CORNELY, residents ofParis, France, have invented a new and usefulllnprovement inOverseaming-Machines, which is fully set forth in the followingspecification.

The present improvement relates to mechanism for producing across-stitch seam on the under side of the material which in conjunction with the stitches described in Let rate and distinct threadsand in cases where the abutted ends of two pieces (or of the same piece)of fabric are joined by such a seam, the entire strain rests upon thethreads which are wound, generally loosely, from one parallel row to theother. To obviate this defect we alternately pass the threads of theparallel rows from side to side, first formingastitch in one row with athread andthen passing it to the other row where a like stitch isformed, and so on, thus producing a double line of cross-stitching onthe under side of the fabric. This object we produce by the use of anoscillating thread carrier which alternately crosses the two threadsafter each stitch and feeds them to the opposite needle from the onewith which they were in engagement at the preceding stitch.

In the accompanying drawings forming a part of thisspecification:-Figure I, represent-s a side view of the machine forproducing the scam in straight lines or with a limited crank motion ofthe feed. Fig. II, is a detachable bottom View of mechanism foroperating the thread-carrier and reciprocating blades. the machine forproducing the work with a full universal crank motion in all directions.Figs. IV, V, VI, and VII, are enlarged views in elevation and planshowing several different positions of the thread-carrier, needles andreciprocating blades at different periods in the operation of formingthe cross-stitch.

Fig.'III, represents an elevation of.

mechanism used in connection'with a uni-- versal feed machine, foroscillating the blades and for adjusting their positions relative to theneedles, and Fig. XIII is an elevation of a portion of the comctlOllSthrough which the oscillatory or vibratory motion is transmitted to theblades and thread-carrier from the main driving shaft.

' In the drawings A is a vertically arranged hollowspindle or threadcarrier, having an enlarged upper end,which is provided with two threadguides b, situated diametrically opposite each other, and through whichthe threads are fed to the needles. The enlarged end of thethread-carrier A, is formed with teeth whereby an oscillatory orreciprocating motion in half-revolutions, alternately in oppositedirections, is imparted thereto, by a pinion z, engaging said teeth,rack-bar W, connecting rod V, crank-arm U and shaft P, as plainly shownand described in Patent No. 219,225. 7

The connection and operation of the blades Gon the bar T, are effectedby connecting link 12, adjustably connected to rocking arm R, whichlatter is oscillated by cam Q, as described in the patent above referredto, except that in the present case two threads being used, four bladesare required.

The mechanism for forming the seam on the upper side of the cloth issubstantially the same as that described in Patent No, 405,146 (the seambeing similar to that sho'wh in Fig. 16 of said patent) consisting ofthe two needles 0 and e, an upper thread-carrier g, which is oscillatedby connection with cam m, through pinions a, t, 3,1" and g, link 0, rackf, and lever 22.

Any suitable form of scam on the upper part of the fabric, may be usedin place of that described in said patent, by changing the form ofmechanism. For instance, if it is desirable to form a seam such as shownin Fig. 1 of Patent No. 461,737, a revolving thread-carrier issubstituted for the oscillating form shown in the Patent No. 405,146.

We have so far described our improvement as applied to embroideringmachines in which said feed and its connections, together with themechanism for oscillating the thread-carrier and the reciprocatingblades being substantially similar to that shown in Patents Nos. 262,743and 292,285. In the present instance the thread-carrier A, is of theconstruction hereinbefore described with the exception that the upperend is not formed with teeth, being provided in lieu thereof with ascrew gear F at its lower end which is engaged by screw-gear F, on shaftN, which is reciprocated lengthwise by bell-crank R, connecting bar L,pivoted arm L, (see Fig. XIII) carrying pin Z, engaging in cam-groove 7ain a pinion K driven by pinion O on driving shaft D. The blades G on barT, .resting in a suitable slide-way, are oscillated by bell-crank V,sleeve S, pivoted arm Y, which is adjustably connected with groovedblock 15, by stud 120 carrying at its outerend toothed wheel 19, engagedby spring catch 20, and at its inner end an eccentrically arrangedfriction roller 13, engaging said grooved block, rod v, bell-crank a,bar a: engaged at its upper end by a cam on a pinion E, which engagespinion K.

J J are spool-holders of a known construction and which are suitablyconnected with the universal feed mechanism, as described in Patent No.479,057.

The operation of our improved machine can be fully understood byreference to Figs. IV, V, VI and VII. In Figs. VI and VII the needlesare descending to make a fresh loop, the threads having been crossedatthe end of the preceding stitch, and the blades G are advancing tofeed the threads to the needles.

In Figs. IV and V the needles are at the limit of their downward strokeand the blades at the limit of their forward stroke, the threads beingforced against the needles in such a position that upon the ascent ofthe latter, the threads will be engaged by the hook-eyes of the same,and drawn up through the fabric, thereby forming a loop. As the needlesascend the blades are drawn back and the thread-carriers are revolvedhalf a revolution again crossing the threads.

As shown in Figs. VIII and IX instead of using four reciprocating bladesG (as shown in Figs. IV, V, VI, and VII) we have omitted the two middleblades and substituted therefor an extension of the bar T, whichprojects out between and of an equal distance with the two side blades.

Having now fully described our invention, what we claim, and desire tosecure by Letters Patent, is-

1. In a machine of the character described, the combination with the twohook needles and mechanism for forming the seam, of a thread-carrier foralternately crossing the two threads of which the seam is formed to theop posite needle from that with which it was last engaged, and a seriesof reciprocating blades for forcing the threads into engagement with theneedles, substantially as described.

2. In a sewing or embroidering machine provided with a universal-feedmechanism and an operating handle therefor, of two needles and theiractuating mechanism, for forming parallel rows of chain stitches, and athread-carrier having two thread guides for supplying threads to theneedles, said threadcarrier being connected with and following themovements of said handle, and means for vibrating said carrier betweenthe needle strokes, so as to cross the threads from one needle to theother at each stitch, substantially as described.

In testimony whereof we have signed this specification in the presenceof two subscribing witnesses.

EMILE (JORNELY. ROBERT CORNELY. Witnesses:

R0131. M. I'IOOPER,

D. T. S. FULLER.

